The cost to insulate a 2000-square-foot house can range from $2,000 to $6,000, depending on the type of insulation used and other factors.
On the insulation manufacturers label on every bag you'll find that for an R-25 you'll need 28 bags per 1000 sq ft. So if you have 2100 sq ft, take 28 x 2 = 56 bags for 2000 sq ft. For the last 100 sq ft, take 1/10 x 28 bags = 3 additional bags rounded up.
Roof insulation costs $0.50 to $1.50 per square foot or between $1,500 to $4,500 for the entire project. Wall insulation costs $1 to $4 per square foot on average, depending on the area of your home's walls.
Should you insulate your attic roof? Insulation is a wise choice to increase the energy efficiency of your home. Quality insulation will make it more cost-effective to heat and cool your home, The Department of Energy's estimates range from a 10% to 50% savings, depending on several factors.
Best Time of Year to Buy Insulation
In this case, the spring is the best time, because you will also start to see savings in the summer months. The same is true for warmer climates, just different times of year because you'll want the job finished before the heat sets in.
The floor wins every time. Insulating the floor is standard practice for an unfinished attic space. The exception to this rule takes place when families opt to convert an unfinished attic space into something usable or livable.
However, due to its construction with natural materials, eventually the product will lose effectiveness. Fiberglass insulation typically needs to be replaced 15-20 years into it's life, as it can easily become dirty, wet, moldy, and ineffective if there's a roof leak or water damage of any kind.
Cost-Effective: Fiberglass insulation is budget-friendly, making it a cost-effective choice for many homeowners. Easy to Install: Installation is relatively simple, making it suitable for both DIY projects and professional installations. Fire-Resistant: Fiberglass is naturally fire-resistant, enhancing home safety.
Insulating an attic costs $2,100 on average. The price you'll pay can range between $1,700 and $2,500, or around $1 to $3 per square foot.
It shouldn't be a surprise that the bigger your home, the longer it will take to complete an insulation installation. Small homes may be completed in a few hours or one working day, while a large home will take more labor and may take multiple days.
Labor Cost to Install Insulation
Most installers charge between $40 and $80 per hour to install insulation.
The recommended thickness for attics is typically 12-16 inches. Spray foam insulation: As discussed earlier, the recommended spray foam insulation thickness can vary depending on factors like climate and location. For attics, a thickness of 2-4 inches is usually sufficient.
Foam Board or Rigid Foam
Foam boards -- rigid panels of insulation -- can be used to insulate almost any part of your home, from the roof down to the foundation. They are very effective in exterior wall sheathing, interior sheathing for basement walls, and special applications such as attic hatches.
It is possible to over-insulate your house so much that it can't breathe. The whole point of home insulation is to tightly seal your home's interior. But if it becomes too tightly sealed with too many layers of insulation, moisture can get trapped inside those layers.
Do I Have To Remove Old Insulation? Unless your insulation is wet, moldy or infested with pests, you don't need to remove it before adding insulation on top of it. ENERGY STAR® recommends that you inspect your insulation for signs of mold, mildew, moisture and pest infiltration before making this determination.
Yes, attic insulation effectively limits heat transfer, which helps maintain comfortable indoor temperatures with less strain on the HVAC system. This efficiency can lead to lower energy bills, a key feature that can attract buyers looking for energy-efficient homes and potentially increase resale value.
Replacement and Removal
Insulation removal costs range from $1 to $2 per square foot. That comes out to around $1,000 to $2,000 if your attic is 1,000 sq. ft. The total cost for having old insulation removed and new insulation installed in your attic is about $2 to $8.50 per square foot.
Fiberglass Batt and Roll Insulation
Fiberglass batt and roll insulation is a common and budget-friendly option. This insulation comes in pre-cut batts or long rolls, making it easy to fit between the framing members, like joists and trusses, in your attic.
DIY Home Insulation Pros
Fiberglass batts and rolls are fairly inexpensive and can be installed in open and accessible areas like attics, crawl spaces, and rim joists by the handyman homeowner. The homeowner can install blown-in cellulose insulation, but a machine must be rented for the installation.
Also, when laying down additional insulation, work from the perimeter toward the attic opening. Never lay insulation over recessed light fixtures or soffit vents. Keep all insulation at least 3 inches away from recessed "can" lights, unless they are rated IC (Insulated Ceiling).
Resilient flooring, such as laminate or vinyl, is one of the best choices you can make for attic floors.
Generally speaking, vapor barriers are considered an essential moisture-blocking tool for climates that experience significant levels of humidity. For that reason, building codes in more humid locations will often require them, in which case you might not have much say about whether to install one or not.